Weathering and Soil Horizons Flashcard

Front

What is soil and why is it valuable?

Back

Soil is a natural resource that supports life on land. It is valuable because everything on land depends on soil for nutrients, water, and support.

Front

Which layer of the soil profile is most affected by weathering and erosion?

Back

Layer 1 (Topsoil) is most affected by weathering and erosion.

Front

What is Horizon A in the soil profile?

Back

Horizon A, also known as Topsoil, is the layer with the most humus, where most plant roots grow, and is darker in color.

Front

What is deposition in the context of soil and rocks?

Back

Deposition is the process that transports rocks, soil, and sediments to a different location.

Front

What is abrasion in geology?

Back

Abrasion is the grinding away of rocks by other rock particles carried by wind, water, and glaciers.

Front

What is humus?

Back

Humus is the organic component of soil formed by the decomposition of plant and animal matter, providing nutrients to plants.

Front

What are the main components of soil?

Back

The main components of soil are minerals, organic matter, water, and air.

Front

What is the role of plant roots in soil?

Back

Plant roots help anchor the plants, absorb water and nutrients, and contribute to soil structure.

Front

What is weathering?

Back

Weathering is the process of breaking down rocks into smaller particles through physical, chemical, or biological means.

Front

What is erosion?

Back

Erosion is the process of moving soil and rock from one location to another, often caused by wind, water, or ice.